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Pack MVs together from the begin for spatial direct, this simplifies the code 

and is a bit faster (5-10 cpu cycles depending on what is meassured).

Originally committed as revision 21784 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2010-02-13 02:20:56 +00:00
parent 02e8c5f0a5
commit 828cfff63d
1 changed files with 17 additions and 20 deletions
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37
libavcodec/h264_direct.c
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@ -216,7 +216,7 @@ single_col:
if(h->direct_spatial_mv_pred){
int ref[2];
int mv[2][2];
int mv[2];
int list;
/* ref = min(neighbors) */
@ -237,24 +237,21 @@ single_col:
int match_count= (left_ref==ref[list]) + (top_ref==ref[list]) + (refc==ref[list]);
if(match_count > 1){ //most common
mv[list][0]= mid_pred(A[0], B[0], C[0]);
mv[list][1]= mid_pred(A[1], B[1], C[1]);
mv[list]= (mid_pred(A[0], B[0], C[0])&0xFFFF)
+(mid_pred(A[1], B[1], C[1])<<16);
}else {
assert(match_count==1);
if(left_ref==ref[list]){
mv[list][0]= A[0];
mv[list][1]= A[1];
mv[list]= *(uint32_t*)A;
}else if(top_ref==ref[list]){
mv[list][0]= B[0];
mv[list][1]= B[1];
mv[list]= *(uint32_t*)B;
}else{
mv[list][0]= C[0];
mv[list][1]= C[1];
mv[list]= *(uint32_t*)C;
}
}
}else{
int mask= ~(MB_TYPE_L0 << (2*list));
mv[list][0] = mv[list][1] = 0;
mv[list] = 0;
ref[list] = -1;
if(!is_b8x8)
*mb_type &= mask;
@ -288,13 +285,13 @@ single_col:
|| (l1ref0[xy8] < 0 && l1ref1[xy8] == 0 && FFABS(l1mv1[xy4][0]) <= 1 && FFABS(l1mv1[xy4][1]) <= 1))){
a=b=0;
if(ref[0] > 0)
a= pack16to32(mv[0][0],mv[0][1]);
a= mv[0];
if(ref[1] > 0)
b= pack16to32(mv[1][0],mv[1][1]);
b= mv[1];
n++;
}else{
a= pack16to32(mv[0][0],mv[0][1]);
b= pack16to32(mv[1][0],mv[1][1]);
a= mv[0];
b= mv[1];
}
fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, a, 4);
fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, b, 4);
@ -312,12 +309,12 @@ single_col:
&& h->x264_build>33U))){
a=b=0;
if(ref[0] > 0)
a= pack16to32(mv[0][0],mv[0][1]);
a= mv[0];
if(ref[1] > 0)
b= pack16to32(mv[1][0],mv[1][1]);
b= mv[1];
}else{
a= pack16to32(mv[0][0],mv[0][1]);
b= pack16to32(mv[1][0],mv[1][1]);
a= mv[0];
b= mv[1];
}
fill_rectangle(&h->mv_cache[0][scan8[0]], 4, 4, 8, a, 4);
fill_rectangle(&h->mv_cache[1][scan8[0]], 4, 4, 8, b, 4);
@ -331,8 +328,8 @@ single_col:
continue;
h->sub_mb_type[i8] = sub_mb_type;
fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, pack16to32(mv[0][0],mv[0][1]), 4);
fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, pack16to32(mv[1][0],mv[1][1]), 4);
fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, mv[0], 4);
fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, mv[1], 4);
fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, (uint8_t)ref[0], 1);
fill_rectangle(&h->ref_cache[1][scan8[i8*4]], 2, 2, 8, (uint8_t)ref[1], 1);